TrackJS

SSL certificate lifetimes are dropping to 47 days.   For most teams, that's not on their radar yet. But if you're managing certs manually today, you're about to find out the hard way.   We hit this problem at TrackJS first. Our annual wildcard renewal process worked fine when we did it once a year. At 47 days, that same process becomes a continuous operational burden, wildcard certs distributed across Windows and Linux hosts, services that aren't publicly accessible, nothing that fit neatly into certbot's assumptions.   So we built CertKit. Centralized ACME client, pushes renewed certs to wherever they need to go, and monitors that what's actually running in production matches what you deployed. Silent automation failures are how you get 2am outages.   After a year of beta, CertKit is out and open for business. Founding customer pricing (40% off forever) is available through May 31.   If you're managing certificates at scale, it's worth a look: https://lnkd.in/gc_MBU8S   #DevOps #SSL #Infrastructure

PSA: March 15 is the last day to issue SSL certificates with ~1 year of validity. After that, 200-day max. Then 100 in 2027. Then 47 in 2029. Renewing before the deadline buys you a real runway to get automation in place before the industry forces your hand. 50 certificates managed manually at 47-day validity is 400 renewal events a year. That's not a process, that's a headcount problem. https://lnkd.in/gQPYM7hq #PKI #CertificateManagement #Cybersecurity

Your team is shipping code nobody fully understands. Some from coworkers. Some from contractors. A growing pile of it from AI that looked great in the diff and broke on the first edge case. The bug report still lands on your desk like you wrote the thing yourself. The instinct is to open the file and start reading until something makes sense. That approach is slow, expensive, and usually wrong. The real skill is resisting it. New post on how to actually debug code you didn't write, without reverse-engineering someone else's bad assumptions. https://lnkd.in/dXPfXh3x #JavaScript #debugging #softwaredevelopment

AI is shipping JavaScript faster than humans can review it. The problem isn’t syntax, it’s timing bugs, weird browsers, bad data, and third-party chaos that only shows up with real users. You can’t code review vibes, so you need production visibility. https://lnkd.in/gJwNc6f6 #JavaScript #SoftwareEngineering #DevTools

“undefined is not an object (evaluating 'window.webkit.messageHandlers')” is one of those errors that looks scary and explains nothing. It’s almost always a WKWebView mismatch in Safari or iOS. We wrote up what messageHandlers are, why this fails in real apps, and how to fix it without guesswork. https://lnkd.in/gZNes24f #JavaScript #WebDevelopment #Safari

Your team is debugging "Unexpected end of input" errors. They're checking code syntax, reviewing bracket matching, running linters. They're wasting time. Most production instances of this error aren't syntax problems. They're server failures disguised as parsing errors. What actually happened: - API returned an empty response when your code expected JSON - Server sent an HTML error page instead of the JSON you requested   - Network timeout truncated the response mid-transmission - Authentication redirect served HTML to your `response.json()` call The error message is identical to a missing bracket, but the root cause is completely different. Your developers can't fix this with better syntax. **The real challenge:** These errors only appear when infrastructure misbehaves. Your development environment with stable local APIs never triggers them. Your staging environment with reliable test data doesn't see them. Then production hits and suddenly JSON parsing is failing intermittently. **What engineering teams need:** - Response validation before parsing (check status, content-type) - Defensive parsing patterns that handle empty/malformed data - Production monitoring that captures what the server actually returned - Pattern recognition to spot which endpoints or conditions trigger failures We documented both variants of this error (development syntax vs production JSON parsing), the defensive patterns that work, and how to distinguish server problems from code problems. If your team is spending cycles debugging production parsing errors, this breakdown will help you build more resilient data handling. Read the full guide: https://lnkd.in/dVCau68u How do your teams handle intermittent JSON parsing failures from unreliable APIs? #JavaScript #WebDevelopment #ProductionDebugging

Firefox throws "undefined has no properties" when you try to destructure null or undefined. The problem is, this error message is less helpful than what Chrome or Safari show for the exact same issue. Chrome tells you which property you tried to destructure and from what value. Safari at least identifies it as a destructuring problem. Firefox just says "undefined has no properties" and makes you figure out the rest. This matters because modern JavaScript relies heavily on destructuring for clean code. When APIs return null instead of objects, when function arguments are missing, or when async data hasn't loaded yet, these errors show up in production. The fix is straightforward once you know what's happening. Add fallback objects with the nullish coalescing operator, set default parameters on functions that destructure arguments, or validate data before destructuring. We documented all the common causes and systematic fixes here: https://lnkd.in/gqPtHYT6 If your team works across browsers, understanding how different browsers report the same underlying issue helps you debug faster and write more defensive code. #JavaScript #WebDevelopment #SoftwareEngineering

Your React app renders before your API responds. Your function gets called without the expected object. Your backend team changes the response shape. Same result: "Cannot destructure property 'x' of 'y' as it is undefined" This is one of the most common JavaScript errors in production, and it's actually telling you something useful. Unlike dot notation (user.name) which fails silently, destructuring fails loud. It catches data flow problems that would otherwise become confusing bugs downstream. The fix isn't complicated. Default values, loading guards, parameter defaults. But understanding why it happens matters more than the quick fix. We put together a full guide covering the root causes, systematic fixes, and TypeScript patterns that prevent these errors at compile time. https://lnkd.in/gqyYFfpV #javascript #frontend #webdevelopment

Safari throws "Right side of assignment cannot be destructured" when you try to destructure null or undefined. Chrome tells you exactly which property failed. Firefox tells you what the value was. Safari gives you a riddle. The underlying bug is the same across browsers, it's just easier to debug when the error message actually helps. Most common causes: API responses that return null instead of an empty object, functions called without expected arguments, and React components rendering before async data loads. The simplest fix is a fallback object: const { name, email } = userData ?? {}; Full breakdown of causes and fixes: https://lnkd.in/g242Vj8K #javascript #webdevelopment #frontend

Your error monitoring suddenly showing 404 errors for ads.txt, security.txt, and /.well-known/ files? Before you spend time debugging, it's probably the HTTP Archive's almanac scanning with WebPageTest. Unlike most crawlers, WebPageTest uses real Chromium browsers. That means your JavaScript executes, your monitoring runs, and you capture every failed request for files your site doesn't have. HTTP Archive runs monthly crawls of millions of websites using WebPageTest infrastructure. Your site might get scanned even if you've never used the tool directly. The 404 response is correct. These files are optional for most sites. The fix is filtering bot traffic, not creating files you don't need. Full breakdown of what files get checked and how to handle them: https://lnkd.in/gewX6E_4 #javascript #webdevelopment #errormonitoring